Tack-driving mechanism for lasting boots or shoes



2 Sheets-Sheet 1.

(No Model.)

R. ASHE.

TAGK DRIVING MECHANISM FOR [IA STING BOOTS 0R SHOES.

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R. ASHE.

TACK. DRIVING MECHANISM FOR 'LASTING BOOTS OR SHOES. No. 341,823.Patented May 11, 1886.

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ROBERT ASHE, OF SOMERVILLE, ASSIGNOR TO JOHN F. CURTIS, OF

EOSTON, MASSACHUSETTS.

TACK-DRIVING MECHANISM FOR LASTING BOOTS OR SHOES.

EPECIPICATION forming part of Letters Patent No. 3l-l,823,dated May 11,18861.

Application lilcd October 12, 1885. Serial No. 179,731. (No model.)

.To aZZ whom it may concern: 7

Be it known that 1, ROBERT AsHE, of Somerville, in the county ofMiddlesex and State of Massachusetts, have invented a new and structionof a machine that shall be sure in its action and not liable to get outof order, and simple in construction. These objects I attain by themechanism shown in the accomanvin drawin s in which- Figure 1 is a sideelevation of my machine. Fig. 2 is an elevation of a part viewed fromthe opposite side from which Fig. l is taken,

showing the device for stopping the tack driving mechanism when the bootor shoe is removed. Figs. 3 aud t illustrate the details. Fig. 5 showsin elevation the main shaft, driving'pulley, friction-pulley, and clutchand cam for operating the driving mechanism. Fig. 6 is a longitudinalsection of a part of the tack slide or trough and some of its connectingparts. Fig. 7. is a plan of the same. Fig. 8 is a section taken on lineX X of Fig. 6, and Fig. 9 is a detail showing the parts that areimmediately connected with delivering the tack to the action of thedriver.

In the drawings, A represents the post upon which the machine issupported.

B and B are parts which constitute the frame-work of the machine, and towhich the working parts are attached.

0, Figs. 1 and 5, is the main shaft of the machine. Upon the shaft 0,Ihave a quill, 0 Fig. 5, attached to one end of which is thedriving-pulley G and to the other end the pulley O. The quill O and itsattached pulleys 0 G can be moved slightly lengthwise on the shaft G bymeans of the lever C, which operates in the groove 0 Fig. 5.

The interior of the pulleys together with the cone which is rigidlyattached to the shaft (3, form a friction-clutch, so that when desirablethe shaft 0 may be made to revolve, and through the cam O operate thetack-driv ing mechanism.

D, Figs. 1 and 5, is the belt extending from the pulley O to the wormwheel D, which,

acting through the gear D operates the tack supplying wheel D (See Figs.1 and 42.) The wheel D is located in the tack reservoir D",

and surrounds the end of the tack-trough E, as shown, so that in itsrevolutions it is constantly taking tacks from the lower part of thereservoir D and carrying them in the re cesses d, Fig. 4, above thetrough E and dropping them upon it,so as to keep the said trough Econstantly supplied with tacks. This action of the tack-supplying wheelD is going on whether the tackdriving mechanism is at work or not,sothat the tack-trough E is always full of tacks, these tacks being inposition, as illustrated at E Fig. 6, the trough E being sufficientlyinclined, so that the tacks E will slide down by their own gravity tothe delivery-recess H, Figs. 1 and 9.

To prevent more than one tack being delivered at a time, I have thefollowing device, (shown more particularly in Figs. 6, 7, and 8:) Thisdevice consists of a reciprocating bedpiece, F, which has upon itprojections F F F, (see Figs. 7 and 8,) which are arranged to actsimilar to the escapementof a watch or clockthat is, when one of thepoints, F*, for instance, passes through the tack-raceway, as shown inFigs. 7 and 8, suficicntly far to hold the tacks from sliding down, itscorresponding point, F", is clear from the raceway; but at the nextoscillation of F it will enter the tackway E above the last tack, and,as at the time of this entrance of F, F is withdrawn so that the tackheld by it can slide into receptacle H. At the next operation of the rodF the tack held by F will be released and retained by F until anotheroscillation takes placethat is, one tack will be released at eachoscillation of the bar F;

F, Figs. 6, 7, and 8, is a plate attached to the oscillating bar F, andforces the released tack into the throat under the driver-tacks.Oscillation is imparted to the bar F by means of the lever F, Figs. 1and 7. This lever F has a recess at F in which the lower end of thelever F operates, the lever F being pivoted to the frame of the machineat F Fig. 1. The upper end, F, of the lever F has attached to it a fixedpin, F (See Figs. 1 and 3.) This pin F enters the cam-groove G, Fig. 3,

formed in a bracket, G, which is made fast to the oscillating arm M,Figs. 1 and 3, so that at each up and down stroke of the arm M mo tionis communicated to the lever F. oscillating bar F and escapement-pointsF F F.

I will now describe the tack-driving mechanism. attached to aslidingpart, M, which has upon its upper end a pin and friction block, M whichis embraced by the forked end M M of the lever M. This lever M ispivoted to the frame of the machine at M and is made to work by means ofthe cam G. Cam-pin L, Figs. 1 and 5, is attached to the lever L, which,swinging on the fixed pin L acts through the pin L pitman L, and pin Land thus operates the lever M.

The tack-receiving hopper H, Figs. 1, 6, and 9, is formed at thejunction of two levers, H H, Fig. 9. These levers are pivoted to thepart E by pivots h h, and held together by a spring, H The receptacleHis cone-shaped, and has in the lowerpart an opening just largeenough'for allowing the blade of the tack to pass through it, but notlarge enough to allow the head to go through, so that the tack willremain suspended until the drivingrod M strikes it, which will force itthrough, the levers H H yielding laterally to admit of the passage ofthe tack-head. The tack after leaving the receptacle H" passes throughthe hollow presser-foot.

To prevent the tack-driving mechanism fro m operating when the shoe isremoved from the machine, I have the device shown in Fig. 2. Thisconsists of a bell-crank lever, K K which M, Fig. 1, is the driving-rod,and is is pivoted to the frame of the machine, as

I shown at K. The upper end, K of this lever engages in a notch formedin the bracketpiece K K and is there held by K unless thrown out by themeans that I will now describe. The presser-foot H is attached to asliding part, H, which is guided by the screws H H in the slots h h.This slide H has a projection, H upon which the lower end, K, of thelever K K rests. When the shoe is placed in position for being tacked,it forces the presser-foot H and the slide H upward. This causes theprojection H to force the lever K K into such a position as to throw outits end K from the notch in K. This action will leave the lever M freeto operate so long as the shoe is in place.

I claim 1. In a machine for driving tacks, the conibiuation of thetack-trough E and reciprocating bed piece F wit-lithe escapementprojections F F F, all operating together substantially as described,and for the purpose set forth.

2. In a machine for driving tacks, the combination of the driving-pulley O, quill C sliding device 0 G, and pulley G with the shaft (7,cam G, lever F, link L'fiand workinglever M, all operating togethersubstantially as described, and for the purpose set forth.

ROBERT ASHE.

Witnesses:

FRANK G. PARKER, MATTHEW M. BLUNT.

